:root {
  --primary-color: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --danger-color: #ef4444;
  --text-primary: #1f2937;
  --text-secondary: #4b5563;
  --text-light: #9ca3af;
  --background-light: #f3f4f6;
  --background-white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-primary);
  background-color: var(--background-light);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 12px;
}

.page-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  border-radius: 3px;
}

.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

/* 自定义 Element Plus 主题 */
:root {
  --el-color-primary: var(--primary-color);
  --el-color-success: var(--secondary-color);
  --el-color-warning: var(--accent-color);
  --el-color-danger: var(--danger-color);
}

.el-button--primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border: none;
  transition: all 0.3s ease;
}

.el-button--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.el-input__inner {
  border-radius: 8px;
}

.el-card {
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.el-card:hover {
  box-shadow: var(--shadow-md);
}